One of 10 educational circuit boards we designed for a private training institution. Unlike the others, this board was designed on a flexible PCB material so it can comfortably wrap around the hand. The circuit has five LEDs, each wired in parallel with its own 220Ω current-limiting resistor; powered by a CR2032 coin cell, it lights up all five LEDs at once while the button is held down.
Our customer's goal was to teach students flex PCB technology, why each branch of a parallel LED circuit needs its own current-limiting resistor, and a simple button-controlled battery circuit, through a fun, wearable example. We handled the full schematic and PCB design ourselves, planning the layout so the board could be manufactured in a size and shape that wraps around the hand.
After the needs analysis, we designed the circuit connecting five parallel LED branches to a button and a CR2032 battery holder. We shaped the PCB design with the board being manufactured from flexible material and wrapped around the hand in mind. We delivered the schematic and PCB design to the training institution.
